大型航天器热管理系统分析技术研究

大型航天器热管理的一个重要内容就是从总体角度实现系统级的分析。本文以假想的空间实验室为例,数值模拟了该航天器热管理系统的温度分布。在此基础上,使用最速下降法,通过分析计算给出了冷凝干燥换热器温度控制在一定范围内,热管理系统的内外回路最小流量要求及低温内回路三个支路流量分配。后者寻找设计参数的分析过程和分析方法同样可以应用于敏感性分析、优化设计、实验参数修正等系统分析。总之,本文初步实现了热管理系统分析。

ANALYSIS OF THERMAL MANAGEMENT SYSTEM IN LARGE SPACECRAFT

It is important that system integrated analysis of thermal management of large spacecraft. The temperature distribution of suppositional space lab was modeled. Based on the above modei, parameters, such as minimum flux of flow loops and flux of three sub pipeline of low temperature inner loop, was sought using steepest ascent method when the temperature of condenser was in required range. The process of parameters' seeking was similarly used in sensitivity analysis, optimization and test data correlation. In a word, the thermal management system was successfully analyzed.